// index.js
// 获取应用实例

var app = getApp();

// 引入这个插件，使html内容自动转换成wxml内容
var WxParse = require('../../wxParse/wxParse.js');

Page ({
  firstIndex: -1,
  data      : {
    bannerApp     : true,
    winWidth      : 0,
    winHeight     : 0,
    currentTab    : 0, //tab切换
    productId     : 0,
    itemData      : {},
    bannerItem    : [],
    buynum        : 1,
    // 产品图片轮播
    indicatorDots : true,
    autoplay      : true,
    interval      : 5000,
    duration      : 1000,
    // 属性选择
    firstIndex    : -1,
    // 准备数据
    // 数据结构：以一组一组来进行设定
    commodityAttr : [],
    attrValueList : [],
    isCollect     : 0
  },

  // 弹窗
  setModalStatus: function (e) {
    var animation = wx.createAnimation({
      duration      : 200,
      timingFunction: "linear",
      delay         : 0
    })

    this.animation = animation
    animation.translateY(300).step();

    this.setData({
      animationData : animation.export()
    })

    if (e.currentTarget.dataset.status == 1) {
      this.setData(
        {
          showModalStatus : true
        }
      );
    }

    setTimeout(function () {
      animation.translateY(0).step()

      this.setData({
        animationData : animation
      })

      if (e.currentTarget.dataset.status == 0) {
        this.setData(
          {
            showModalStatus : false
          }
        );
      }
    }.bind(this), 200)
  },

  // 加减
  changeNum: function  (e) {
    var that = this;

    if (e.target.dataset.alphaBeta == 0) {
      if (this.data.buynum <= 1) {
        buynum: 1
      }else{
        this.setData({
          buynum: this.data.buynum - 1
        })
      };
    } else {
      this.setData({
        buynum: this.data.buynum + 1
      })
    };
  },

  // 传值
  onLoad: function (option) {
    // this.initNavHeight();
    var that = this;

    that.setData({
      productId : option.productId,
    });

    that.loadProductDetail();
  },

  // 商品详情数据获取
  loadProductDetail: function() {
    var that = this;

    wx.request({
      url   : app.d.apiUrl + 'Product/index',
      method: 'post',
      data  : {
        uid   : app.d.userId,
        pro_id: that.data.productId,
      },
      header: {
        'Content-Type': 'application/x-www-form-urlencoded'
      },

      success: function (res) {
        // init data
        var status = res.data.status;

        if (status==1) {
          var pro = res.data.pro;
          var content=pro.content;

          WxParse.wxParse('content', 'html', content, that, 3);

          that.setData({
            itemData      : pro,
            bannerItem    : pro.img_arr,
            isCollect     : pro.collect,
            commodityAttr : res.data.commodityAttr,
            attrValueList : res.data.attrValueList,
          });
        } else {
          wx.showToast({
            title   : res.data.err,
            duration: 2000,
          });
        }
      },

      error: function(e) {
        wx.showToast({
          title   : '网络异常！',
          duration: 2000,
        });
      },
    });
  },

  // 属性选择
  onShow: function () {
    this.setData({
      includeGroup: this.data.commodityAttr
    });

    this.distachAttrValue(this.data.commodityAttr);
    // 只有一个属性组合的时候默认选中
    // console.log(this.data.attrValueList);

    if (this.data.commodityAttr.length == 1) {
      for (var i = 0; i < this.data.commodityAttr[0].attrValueList.length; i++) {
        this.data.attrValueList[i].selectedValue = this.data.commodityAttr[0].attrValueList[i].attrValue;
      }

      this.setData({
        attrValueList: this.data.attrValueList
      });
    }
  },

  // 获取数据
  distachAttrValue: function (commodityAttr) {
    /**
      将后台返回的数据组合成类似
      {
        attrKey:'型号',
        attrValueList:['1','2','3']
      }
      */

    // 把数据对象的数据（视图使用），写到局部内
    var attrValueList = this.data.attrValueList;

    // 遍历获取的数据
    for (var i = 0; i < commodityAttr.length; i++) {
      for (var j = 0; j < commodityAttr[i].attrValueList.length; j++) {
        var attrIndex = this.getAttrIndex(commodityAttr[i].attrValueList[j].attrKey, attrValueList);

        // console.log('属性索引', attrIndex);
        // 如果还没有属性索引为-1，此时新增属性并设置属性值数组的第一个值；索引大于等于0，表示已存在的属性名的位置
        if (attrIndex >= 0) {
          // 如果属性值数组中没有该值，push新值；否则不处理
          if (!this.isValueExist(commodityAttr[i].attrValueList[j].attrValue, attrValueList[attrIndex].attrValues)) {
            attrValueList[attrIndex].attrValues.push(commodityAttr[i].attrValueList[j].attrValue);
          }
        } else {
          attrValueList.push({
            attrKey   : commodityAttr[i].attrValueList[j].attrKey,
            attrValues: [commodityAttr[i].attrValueList[j].attrValue]
          });
        }
      }
    }

    // console.log('result', attrValueList)
    for (var i = 0; i < attrValueList.length; i++) {
      for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
        if (attrValueList[i].attrValueStatus) {
          attrValueList[i].attrValueStatus[j] = true;
        } else {
          attrValueList[i].attrValueStatus = [];
          attrValueList[i].attrValueStatus[j] = true;
        }
      }
    }

    this.setData({
      attrValueList : attrValueList
    });
  },

  getAttrIndex: function (attrName, attrValueList) {
    // 判断数组中的attrKey是否有该属性值
    for (var i = 0; i < attrValueList.length; i++) {
      if (attrName == attrValueList[i].attrKey) {
        break;
      }
    }

    return i < attrValueList.length ? i : -1;
  },

  isValueExist: function (value, valueArr) {
    // 判断是否已有属性值
    for (var i = 0; i < valueArr.length; i++) {
      if (valueArr[i] == value) {
        break;
      }
    }

    return i < valueArr.length;
  },

  // 选择属性值事件
  selectAttrValue: function (e) {
    /*
      点选属性值，联动判断其他属性值是否可选
      {
        attrKey:'型号',
        attrValueList:['1','2','3'],
        selectedValue:'1',
        attrValueStatus:[true,true,true]
      }
      console.log(e.currentTarget.dataset);
    */
    var attrValueList = this.data.attrValueList;
    var index = e.currentTarget.dataset.index;  // 属性索引
    var key = e.currentTarget.dataset.key;
    var value = e.currentTarget.dataset.value;

    if (e.currentTarget.dataset.status || index == this.data.firstIndex) {
      if (e.currentTarget.dataset.selectedvalue == e.currentTarget.dataset.value) {
        // 取消选中
        this.disSelectValue(attrValueList, index, key, value);
      } else {
        // 选中
        this.selectValue(attrValueList, index, key, value);
      }
    }
  },

  // 选中
  selectValue: function (attrValueList, index, key, value, unselectStatus) {
    // console.log('firstIndex', this.data.firstIndex);
    var includeGroup = [];

    if (index == this.data.firstIndex && !unselectStatus) {   // 如果是第一个选中的属性值，则该属性所有值可选
      var commodityAttr = this.data.commodityAttr;
      // 其他选中的属性值全都置空
      // console.log('其他选中的属性值全都置空', index, this.data.firstIndex, !unselectStatus);

      for (var i = 0; i < attrValueList.length; i++) {
        for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
          attrValueList[i].selectedValue = '';
        }
      }
    } else {
      var commodityAttr = this.data.includeGroup;
    }

    // console.log('选中', commodityAttr, index, key, value);
    for (var i = 0; i < commodityAttr.length; i++) {
      for (var j = 0; j < commodityAttr[i].attrValueList.length; j++) {
        if (commodityAttr[i].attrValueList[j].attrKey == key && commodityAttr[i].attrValueList[j].attrValue == value) {
          includeGroup.push(commodityAttr[i]);
        }
      }
    }

    attrValueList[index].selectedValue = value;

    // 判断属性是否可选
    // for (var i = 0; i < attrValueList.length; i++) {
    //   for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
    //     attrValueList[i].attrValueStatus[j] = false;
    //   }
    // }
    // for (var k = 0; k < attrValueList.length; k++) {
    //   for (var i = 0; i < includeGroup.length; i++) {
    //     for (var j = 0; j < includeGroup[i].attrValueList.length; j++) {
    //       if (attrValueList[k].attrKey == includeGroup[i].attrValueList[j].attrKey) {
    //         for (var m = 0; m < attrValueList[k].attrValues.length; m++) {
    //           if (attrValueList[k].attrValues[m] == includeGroup[i].attrValueList[j].attrValue) {
    //             attrValueList[k].attrValueStatus[m] = true;
    //           }
    //         }
    //       }
    //     }
    //   }
    // }
    // console.log('结果', attrValueList);

    this.setData({
      attrValueList : attrValueList,
      includeGroup  : includeGroup
    });

    var count = 0;

    for (var i = 0; i < attrValueList.length; i++) {
      for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
        if (attrValueList[i].selectedValue) {
          count++;
          break;
        }
      }
    }

    if (count < 2) {  // 第一次选中，同属性的值都可选
      this.setData({
        firstIndex: index
      });
    } else {
      this.setData({
        firstIndex: -1
      });
    }
  },

  // 取消选中
  disSelectValue: function (attrValueList, index, key, value) {
    var commodityAttr = this.data.commodityAttr;
    attrValueList[index].selectedValue = '';

    // 判断属性是否可选
    for (var i = 0; i < attrValueList.length; i++) {
      for (var j = 0; j < attrValueList[i].attrValues.length; j++) {
        attrValueList[i].attrValueStatus[j] = true;
      }
    }
    this.setData({
      includeGroup  : commodityAttr,
      attrValueList : attrValueList
    });

    for (var i = 0; i < attrValueList.length; i++) {
      if (attrValueList[i].selectedValue) {
        this.selectValue(attrValueList, i, attrValueList[i].attrKey, attrValueList[i].selectedValue, true);
      }
    }
  },

  initProductData: function(data) {
    data["LunBoProductImageUrl"] = [];

    var imgs = data.LunBoProductImage.split(';');
    for(let url of imgs){
      url && data["LunBoProductImageUrl"].push(app.d.hostImg + url);
    }

    data.Price = data.Price/100;
    data.VedioImagePath = app.d.hostVideo + '/' +data.VedioImagePath;
    data.videoPath = app.d.hostVideo + '/' +data.videoPath;
  },

  // 添加到收藏
  addFavorites: function(e) {
    var that = this;

    console.log(that.data.itemData);

    wx.request({
      url   : app.d.apiUrl + 'Product/col',
      method: 'post',
      data  : {
        uid : app.d.userId,
        pid : that.data.productId,
      },
      header: {
        'Content-Type': 'application/x-www-form-urlencoded'
      },

      success: function (res) {
        // init data
        var data = res.data;

        if (data.status == 1 && that.data.isCollect!= 1) {
          wx.showToast({
            title   : '收藏成功！',
            duration: 1500
          });

          that.setData({
            isCollect : 1
          });
        }
        else if (data.status == 1 && that.data.isCollect == 1) {
          wx.showToast({
            title: '取消收藏！',
            duration: 1500
          });


          that.setData({
            isCollect : 0
          });
        }
        else{
          wx.showToast({
            title   : data.err,
            duration: 2000
          });
        }
      },

      fail: function() {
        // fail
        wx.showToast({
          title   : '网络异常！',
          duration: 2000
        });
      }
    });
  },

  // 添加到购物车
  addShopCart: function(e) {
    var that = this;

    console.log(that);

    wx.request({
      url   : app.d.apiUrl + 'Shopping/add',
      method: 'post',
      data  : {
        uid : app.d.userId,
        pid : that.data.productId,
        num : that.data.buynum,
      },
      header: {
        'Content-Type': 'application/x-www-form-urlencoded'
      },

      success: function (res) {
        // init data
        var data = res.data;

        if (data.status == 1) {
          var ptype = e.currentTarget.dataset.type;

          if (ptype == 'buynow') {
            wx.redirectTo({
              url : '/pages/order/pay?cartId='+data.cart_id
            });
            return;
          } else {
            wx.showToast({
              title   : '加入购物车成功',
              icon    : 'success',
              duration: 2000
            });
          }
        } else {
          wx.showToast({
            title   : data.err,
            duration: 2000
          });
        }
      },

      fail: function() {
        // fail
        wx.showToast({
          title   : '网络异常！',
          duration: 2000
        });
      }
    });
  },

  // 滑动切换tab
  bindChange: function (e) {
    var that = this;

    that.setData({
      currentTab: e.detail.current
    });
  },

  // 获取系统信息
  initNavHeight: function() {
    var that = this;

    wx.getSystemInfo({
      success: function (res) {
        that.setData({
          winWidth  : res.windowWidth,
          winHeight : res.windowHeight
        });
      }
    });
  },

  bannerClosed: function() {
    this.setData({
      bannerApp : false,
    })
  },

  // 点击tab切换
  swichNav: function (e) {
    var that = this;

    if (that.data.currentTab === e.target.dataset.current) {
      return false;
    } else {
      that.setData({
        currentTab: e.target.dataset.current
      })
    }
  }
});
